Atomizing-carbureter for explosive-engines.



No. 789,537. PATENTED MAY 9, 1905. J. GROUVELLB & H. ARQUEMBOURG. ATOMIZING GARBURETER FOR EXPLOSIVE ENGINES.

APPLICATION FILED JULY 3,1903.

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W/TA/ES8I lA/l/E/VTORSS PATENTED MAY 9, 1905. J. GROUVELLE & H. ARQUEMBOURG. ATOMIZING CARBURETER FOR EXPLOSIVE ENGINES.

APPLICATION FILED JULY 3I 1903.

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PATENT rrilcis.

ATOMlZlltlG-UAWBUHETER FOR EXl LOSlVlE-"IENGJHNHE$.

.EnPEGIFIGATIEON forming part of Letters Patent No. 789,537, dated May 9, 1905. Application filed July 3,1908. Serial No. 164,125.

To (all Hf/wilt it nu/,7 concern.-

Be it known that we, JULES GnoUvELLE and. HENRI AR UEMBOURG, citizens of the French Republic, residing at 71 Rue du Moulin-Vert, Paris, in the French. Republic, have invented certain new and useful Improvements in Constant-Level and Atomizing Carburetors for Explosive-Engines, of which the following is a specilication.

This invention relates to lIDPIOVODlOHtS applicable to constant-level and atoinizing carbureters articularl' when used for automobile vehicles provided with internal-combustion motors.

In the accompanying drawings, which illustrate a carburetor embodying our improvements, Figure l is a sectional elevation on the line a: in Fig. 2. Fig. 2 is a sectional plan on. the line g 2 in Fig. 1, while Figs. 3 l, 5, (5, 7, and 8 are views of modifications.

A. carlnireter embodying this invention comprises a vessel (1 which may be cylindrical and to which spirit or other inllan'm'iable liquid is supplied through a pipe 7), leading to the bottom of the vessel, the top thereof being formed with an orifice 0, opening to the atmosphere. lVithin the vessel a is a lloat (Z, secured to a central spindle e and adapted to control a valve whereby the admission of the liquid to the vessel is regulated, the said valve I f having, by preference, the form. of a truncated cone. A suitable nozzle 9 conducts a jet of the inflammable liquid from the vessel (0 to an atomizer it, the latter being in connection with. a pipe for supplying fresh air and with a pipe for earrying oil the air when carbureted.

One of our improvemei'its consists in braking? the lloat d in order to insure a regular operation thereojl. notwithstanding the vibration to which it is subjected, (especially when used in connection with automobile vehicles.) Upon the body of liquid and the movable parts of the apparatus being set in. motion there is a tendency for the valve f to become jammed upon its seat or to be held too long o'll its seat, the result being that the liquid falls below or rises above the desired point, thus interfering with the carbureting process--that is to say, the spraying of the air with liquid hydrocarbon and the formation of an. in'llanunable vapor. In order to avoid these objections, we connect the valve rigidly with the lloat d and provide the structure thus formed with a hydraulic brake. This brake may be formed. by extending the bottom plate Z of the lloat beyond its body portion, so as to leave only sullicient space, as in Fig. 1, between the edge of the plate and the walls of the containing vessel a to allow the inllannnable liquid to pass slowly. As an alternative method the bottom plate Z may be extended, as in Fig. 6, so that its edge is in free sliding contact with the walls of the cylinder a and a contracted passage for the liquid formed by means of holes (Z in the portion of the plate which. projects beyond the body of the lloat. In order to permit any air-bubbles which. may be present in the liquid to escape, the lower surface of the plate Z may be concave, and the said plate may be continued upwardly by means of a cylindrical portion 771, through. which the l loat-rod. c is adapted to pass freely.

lVe prefer the construction last described; but n'iodilications embodying the same principle may be employed. For instance, the lower surface of the bottom plate Z may be convex, as shown in Fig. 3, to allow the airbubbles to rise in the usual. in'ianner, the said plate being extended so that its edge is in sliding contact with the walls of the cylindrical vessel a, holes being provided for the passage 01 the liquid, or the said plate Z may be extended so as to leave room for the liquid to pass slowly between its edge and the walls oi the containing vessel a, as before described. Instead of or in addition to the extended bottom plate brake-disks a may be secured to the float-rod. c, so as to work in separate chambers 0 either above or below the valve f; as shown in Figs. l and 5, and these disks may be either solid or perforated. Figs. 7 and 8, which. are respectively views similar to Figs. i and 5, show perforated disks it.

Another improvement consists in the -form given to the atomizer It. When viewed in lOIlgltUCllDfl-l section, (see Fig. 2,) the inner surface r of the device comprises only symmetrical sinusoidal curves of a special character, and the nozzle 9, through which the liquid is introduced, enters the atomizer h at its throat or narrowest part. By this construction the atomizer is rendered reversible, so that fresh air may be admitted thereto by way of either of the pipesi or connected to its ends, and the earbureted air carried oil by the pipe t or at the opposite end. The operation of securing the carbureter in position is by these means facilitated, which is especially desirable in connection with an automobile vehicle. The formation of the atomizer 7L also affords a direct and easy passage for the fresh air and for the inflammable charge, whereby we avoid the unnecessary loss of charge and pressure which in so many devices for this purpose results in a very prejudicial diminution. in the weight of the explosive mixture supplied to the motor. It is certainly necessary to produce a reduction of pressure in the atomizer for the double purpose of drawing in the outer air and of causing the liquid to flow through the nozzle; but it is advantageous that this diminution of pressure should be localized in the vicinity of the end of the nozzle g, and this is what we accomplish by forming the atomizer 7t with sinusoidal curves at r, the

loss of charge taking place only in the vicinity of the circumference of the narrowest part of the passage.

The atomizer h may be placed at any inclination and will continue to be reversible. The construction of the valve f may be varied, the nozzle 9 may have one or several jets, and the apparatus maybe modified and altered in many respects without afl'eeting the principles underlying our invention.

What we claim as our invention, and desire to secure by Letters Patent, is

1. A device for the purpose specilied hav' ving a vessel to contain the volatile liquid, said vessel having a vent-hole, an atomizer, a conduit leading the liquid from said vessel to the atomizer, a valve controlling the admission of the liquid to said vessel, a float in said vessel which operates said valve, and

* means carried by the float and immersed in the liquid for braking the float.

2. In a constant-level and atomizing carbureter, a vessel for holding spirit or other inflammable liquid, a vent-hole in the vessel, a nozzle leading the liquid from the vessel to an atomizer, a valve controlling the admission of the liquid to the vessel, a float for operating the valve, and a plate projecting from the float so that its edge is in sliding contact with the walls of the vessel, the projecting portion of the plate having perforations to allow for the restricted passage of the liquid.

3. In a constant-level and atomizing carbureter, a vessel for holding spirit or other inflammable liquid, a vent-hole in the vessel, a nozzle leading the liquid from the vessel to an atomizer, a valve controlling the admission of the liquid to the vessel, a float to which the valve is secured by a rod, a bottom plate projecting beyond the body portion of the float to restrict the passage of the liquid and provided with aconcave under surface, and an upwardly-extending tubular )ortion through which the valve-rod passes lrcely to allow for the escape of air from the liquid.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JL'LES eaotrettn. n. s] HENRI MWUEAIBOL'RG. [1. s] Nit-n esses:

Eno UARD Can i'aNoN, GABRIEL l\.lAREAU. 

